Fun game and really good considering this jam only lasted for three days. Did you take any inspiration from bookworm adventures by any chance? The main character was also named lex and made similar noises to this character.
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Umm, no. I know of the game but never played or even seen it. I guess the Lex name is kinda obvious choice though cause in both cases it is a play on lexicon. This style of noises on "speech" is kinda my goto nowadays. I think the inspiration mainly comes from Animal Crossing even though their system is way more in depth than my "just record a bunch of syllables and play them randomly on start of a word". And as a funny trivia, these syllables are what from Finnish words for few cat and dog family species. The sound quality is quite horrible too. They were recorded with a laptop mic and the room is way too echoey too since I moved quite recently and don't have curtains etc on my office.